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Finding the Fourth Proportional to 386,580.98, 579,732.53 and 133,792.89

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Solution

The fourth proportional to 386,580.98, 579,732.53 and 133,792.89 is: 200,641.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,580.98 : 579,732.53 = 133,792.89 : x
  2. Step 2: Convert to fraction form
    386,580.98/579,732.53 = 133,792.89/x
  3. Step 3: Cross multiply
    386,580.98x = 579,732.53 × 133,792.89
  4. Step 4: Simplify right side
    386,580.98x = 77,564,089,946.75
  5. Step 5: Solve for x
    x = 77,564,089,946.75/386,580.98
  6. Step 6: Final answer
    x = 200,641.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.